DUDIT Calculator

Take the 11-question DUDIT drug screening test to identify drug-related problems. Get total score (0-44), risk level, and clinical interpretation.

Complete the 11-question DUDIT screening test to assess drug-related problems

Drug Use Frequency & Pattern (Questions 1–9)

The following questions ask about drugs other than alcohol. Please answer as correctly and honestly as possible.

1. How often do you use drugs other than alcohol?

2. Do you use more than one type of drug on the same occasion?

3. On days that you take drugs, how many times do you typically take them?

4. How often are you influenced heavily by drugs?

5. Over the past year, have you felt that your longing for drugs was so strong that you couldn't resist it?

6. Over the past year, has it happened that you started taking drugs and were then unable to stop?

7. How often over the past year have you taken drugs and then neglected to do something you should have done?

8. Over the past year, how often have you needed to take a drug the morning after heavy drug use the day before?

9. Over the past year, how often have you felt guilty or had a bad conscience because you used drugs?

Harm & Concern (Questions 10–11)

10. Have you or anyone else ever been hurt (mentally or physically) because you used drugs?

11. Has a relative, friend, doctor, nurse, or anyone else ever been worried about your drug use, or told you that you should stop using drugs?

About This Calculator

The Drug Use Disorders Identification Test (DUDIT) is an 11-question screening instrument developed at the Karolinska Institute in Stockholm by Berman, Bergman, Palmstierna, and Schlyter (2002) to identify individuals with risky drug habits, harmful drug use, or possible drug dependence. It is a counterpart to the well-known AUDIT (Alcohol Use Disorders Identification Test) and follows a similar structure and methodology, making it one of the most widely used drug screening tools in clinical and research settings worldwide.

How the scoring works: The 11 questions address key domains of drug-related behavior. Questions 1-9 assess the frequency and pattern of drug use, polydrug use, daily consumption intensity, heavy use, craving, loss of control, neglect of responsibilities, morning use (eye-opener), and guilt. Each of these questions is scored on a 5-point scale from 0 (Never) to 4 (4+ times a week or more). Questions 10 and 11 assess harm to self or others and concern expressed by others, scored 0 (No), 2 (Yes, but not over the past year), or 4 (Yes, over the past year). The maximum total score is 44.

Score interpretation: A score of 0 or 1 indicates no drug-related problems regardless of gender. For men, a score of 6 or more, and for women, a score of 2 or more, suggests possible drug-related problems including harmful use or dependence. A score of 25 or more indicates probable drug dependence on one or more substances. The lower threshold for women reflects research showing that women may develop drug-related problems at lower levels of use compared to men.

Regional notes: The DUDIT is used internationally across India, the United States, the United Kingdom, and many other countries for screening in primary care, psychiatric settings, addiction treatment centers, and correctional facilities. In the US, drug screening follows SAMHSA guidelines; in the UK, the DUDIT is used by NHS addiction services and community drug teams; in India, de-addiction centers at government hospitals and rehabilitation facilities use validated screening tools including the DUDIT. The screening tool has been translated and validated in multiple languages and cultural contexts.

Important disclaimer: This calculator provides reference information based on the validated DUDIT screening instrument. Results should be verified by a healthcare professional. It is not a diagnostic tool and is not a substitute for professional medical advice, diagnosis, or treatment. If you are concerned about your drug use, please contact a healthcare provider or addiction treatment service.

Frequently Asked Questions

What is the DUDIT drug screening test?

The DUDIT (Drug Use Disorders Identification Test) is an 11-question screening instrument developed at the Karolinska Institute to identify individuals with risky drug habits, harmful drug use, or possible drug dependence. It covers frequency of use, polydrug use, craving, loss of control, neglected responsibilities, morning use (eye-opener), guilt, harm to self or others, and concern expressed by others.

How is the DUDIT scored?

Questions 1 through 9 are scored on a 5-point scale from 0 (Never) to 4 (4+ times a week or more). Questions 10 and 11 are scored 0 (No), 2 (Yes, but not over the past year), or 4 (Yes, over the past year). The total DUDIT score ranges from 0 to 44.

How is the DUDIT score interpreted?

A score of 0 or 1 indicates no drug-related problems regardless of gender. For men, a score of 6 or more suggests possible drug-related problems. For women, a score of 2 or more suggests possible drug-related problems. A score of 25 or more indicates probable drug dependence requiring immediate professional evaluation.

What drugs does the DUDIT cover?

The DUDIT covers cannabis, amphetamines, opiates, hallucinogens, solvents/inhalants, GHB, anabolic steroids, and sedatives/sleeping pills. Prescription medications taken as prescribed by a medical professional do not count as drug use in this context. The test does not assess alcohol consumption — use the AUDIT test for alcohol screening.

Can the DUDIT be used for self-assessment?

Yes, the DUDIT is validated for both clinical use and self-assessment. However, results should not replace a professional evaluation. If your score indicates possible drug-related problems or dependence, seek help from a healthcare provider or addiction specialist. In the US, call SAMHSA (1-800-662-4357); in the UK, contact NHS addiction services or FRANK; in India, seek help from de-addiction centers at government hospitals or call the national toll-free helpline (1800-11-0031).

What is the difference between the DUDIT and AUDIT?

The DUDIT (Drug Use Disorders Identification Test) screens for drug-related problems including harmful drug use and dependence on substances other than alcohol. The AUDIT (Alcohol Use Disorders Identification Test) screens for hazardous drinking, harmful alcohol use, and alcohol dependence. Both are 10-11 question screening tools developed using similar methodology but for different substances.

What should I do if my DUDIT score is high?

If your DUDIT score suggests possible drug-related problems (6+ for men, 2+ for women) or probable dependence (25+), consider seeking professional support from a psychologist, psychiatrist, or addiction specialist. Early intervention improves outcomes. Steps you can take include seeking professional counseling, contacting addiction treatment centers, talking to trusted friends or family, identifying triggers, and substituting drug use with healthy activities like exercise.

Is the DUDIT test confidential?

Yes, this DUDIT calculator runs entirely in your browser. No answers or results are sent to any server, stored, or shared. Your responses remain private and confidential. The calculator uses URL parameters only for bookmarking your inputs — no data is transmitted externally.